zend_hash and it's keys + domxml

Hi all ;) I was just wondering why this line doesn't work. It's an extract from domxml.c (slightly changed): if (zend_hash_find(id->value.obj.properties, "doc", sizeof("doc"), (void **)&tmp) == FAILURE) { php_error(E_WARNING, "unable to find my handle property"); This is said to be working under php 4.0.6 and I am using a cvs version of domxml.c and domxml.h Exactly this one: php_domxml.c,v 1.75 2001/09/19 02:24:05 joey Exp I am also curios about the keys in the hash tables. How and where can I find which keys are added into the hash tables? Maybe it's not "doc"... in the domxml extensio there is also "children" key and a few others probably. Where can I find these? I was looking for some zend_hash_update, or zend_hash_add functions but unfortunately it doesn't help ;( Thank for any feedback Chris Jarecki